This document defines and describes different types of malware. It explains that malware is an umbrella term for malicious software like viruses, worms, trojans, ransomware, spyware, adware, and other harmful programs. It then proceeds to define each type of malware, including viruses that replicate and spread between computers, worms that consume system resources, trojans that steal personal information, ransomware that locks systems for payment, and rootkits that are difficult to detect. The document provides examples of each malware type and how they infect systems or compromise user privacy and security.

1. MALWARE AND ITS TYPES
MUHAMMAD DANIYAL QURESHI
COMPUTER SCIENCE
SHAH ABDUL LATIF UNIVERSITY
+923337178801

2. MALWARE
'Malware' is an umbrella term used to refer to a
variety of forms of hostile or intrusive software,
including computer viruses, worms, Trojan horses,
ransomware, spyware, adware, scareware, and
other malicious programs. It can take the form of
executable code, scripts, active content, and other
software
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3. The least dangerous and
most lucrative Malware.
Adware displays ads on your
computer.
TYPES
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4. It is software that spies on you,
tracking your internet activities in
order to send advertising (Adware)
back to your system.
TYPES
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5. A virus is a contagious program or code
that attaches itself to another piece of
software, and then reproduces itself when
that software is run. Most often this is
spread by sharing software or files between
computers.
TYPES
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6. A program that replicates itself and
destroys data and files on the
computer. Worms work to “eat” the
system operating files and data files
until the drive is empty.
TYPES
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7. The most dangerous Malware. Trojans are written with
the purpose of discovering your financial information,
taking over your computer’s system resources, and in
larger systems creating a “denial-of-service attack ”
Denial-of-service attack: an attempt to make a machine
or network resource unavailable to those attempting to
reach it. Example: AOL, Yahoo or your business network
becoming unavailable.
TYPES
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8. Backdoors are much the same as Trojans or
worms, except that they open a “backdoor”
onto a computer, providing a network
connection for hackers or other Malware to
enter or for viruses or SPAM to be sent.
TYPES
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9. Records everything you type on your PC in order
to glean your log-in names, passwords, and other
sensitive information, and send it on to the
source of the keylogging program. Many times
keyloggers are used by corporations and parents
to acquire computer usage information.
TYPES
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10. This one deceives or misleads users. It pretends
to be a good program to remove Malware
infections, but all the while it is the Malware.
Often it will turn off the real Anti-Virus software.
The next image shows the typical screen for this
Malware program, Antivirus 2010
TYPES
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11. If you see this screen that warns you that you have been locked
out of your computer until you pay for your cybercrimes. Your
system is severely infected with a form of Malware called
Ransomware. It is not a real notification from the FBI, but, rather
an infection of the system itself. Even if you pay to unlock the
system, the system is unlocked, but you are not free of it locking
you out again. The request for money, usually in the hundreds of
dollars is completely fake.
TYPES
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12. When your homepage changes to one that looks like those in the
images inserted next, you may have been infected with one form
or another of a Browser Hijacker. This dangerous Malware will
redirect your normal search activity and give you the results the
developers want you to see. Its intention is to make money off
your web surfing. Using this homepage and not removing the
Malware lets the source developers capture your surfing interests.
This is especially dangerous when banking or shopping online.
These homepages can look harmless, but in every case they allow
other more infectious.
TYPES
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13. TYPES
This one is likened to the burglar hiding in the attic,
waiting to take from you while you are not home. It is
the hardest of all Malware to detect and therefore to
remove; many experts recommend completely wiping
your hard drive and reinstalling everything from scratch.
It is designed to permit the other information gathering
Malware in to get the identity information from your
computer without you realizing anything is going on.
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14. THANK YOU FOR YOUR
CONCENTRATION
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